1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2022 Oxide Computer Company 14 */ 15 16 #include <stdio.h> 17 #include <unistd.h> 18 #include <stdlib.h> 19 #include <strings.h> 20 #include <libgen.h> 21 #include <assert.h> 22 #include <errno.h> 23 24 #include <sys/types.h> 25 #include <sys/sysmacros.h> 26 #include <sys/debug.h> 27 #include <sys/vmm.h> 28 #include <sys/vmm_dev.h> 29 #include <vmmapi.h> 30 31 #include "in_guest.h" 32 #include "test_defs.h" 33 34 const char *strict_name = "STRICT_APICV"; 35 36 static bool 37 strict_apicv(void) 38 { 39 const char *strict_val; 40 41 if ((strict_val = getenv(strict_name)) != NULL) { 42 if (strlen(strict_val) != 0 && 43 strcmp(strict_val, "0") != 0) { 44 return (true); 45 } 46 } 47 return (false); 48 } 49 50 int 51 main(int argc, char *argv[]) 52 { 53 const char *test_suite_name = basename(argv[0]); 54 struct vmctx *ctx = NULL; 55 struct vcpu *vcpu; 56 int err; 57 58 ctx = test_initialize(test_suite_name); 59 60 if ((vcpu = vm_vcpu_open(ctx, 0)) == NULL) { 61 test_fail_errno(errno, "Could not open vcpu0"); 62 } 63 64 err = test_setup_vcpu(vcpu, MEM_LOC_PAYLOAD, MEM_LOC_STACK); 65 if (err != 0) { 66 test_fail_errno(err, "Could not initialize vcpu0"); 67 } 68 69 /* 70 * Although x2APIC should be off by default, make doubly sure by 71 * explicitly setting it so. 72 */ 73 err = vm_set_x2apic_state(vcpu, X2APIC_DISABLED); 74 if (err != 0) { 75 test_fail_errno(err, "Could not disable x2apic on vcpu0"); 76 } 77 78 struct vm_entry ventry = { 0 }; 79 struct vm_exit vexit = { 0 }; 80 81 do { 82 const enum vm_exit_kind kind = 83 test_run_vcpu(vcpu, &ventry, &vexit); 84 switch (kind) { 85 case VEK_REENTR: 86 break; 87 case VEK_TEST_PASS: 88 test_pass(); 89 break; 90 case VEK_TEST_FAIL: 91 test_fail_msg("payload signaled failure"); 92 break; 93 case VEK_UNHANDLED: 94 /* 95 * Not all APICv-accelerated accesses are properly 96 * handled by the in-kernel emulation today. 97 * (See: illumos #13847). 98 * 99 * To allow this test to be useful on systems without 100 * APICv, we suppress such failures unless explicitly 101 * strict handling is requested. 102 */ 103 if (vexit.exitcode == VM_EXITCODE_VMX && 104 (vexit.u.vmx.exit_reason == 44 || 105 vexit.u.vmx.exit_reason == 56)) { 106 if (strict_apicv()) { 107 test_fail_vmexit(&vexit); 108 } 109 (void) fprintf(stderr, 110 "Ignoring APICv access issue\n" 111 "If strictness is desired, " 112 "run with %s=1 in env\n", strict_name); 113 test_pass(); 114 } 115 test_fail_vmexit(&vexit); 116 break; 117 default: 118 test_fail_vmexit(&vexit); 119 break; 120 } 121 } while (true); 122 } 123